Patents Assigned to Imperical Chemical Industries PLC
  • Preparation of trisubstituted benzoic acids and intermediates
    Patent number: 5153357
    Abstract: A process for the preparation of 2-(hydrogen, halogen or lower alkyl)-3-(hydroxy, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, --OCH.sub.2 CH.sub.2 OCH.sub.3, --OCH.sub.2 CH.sub.2 OC.sub.2 H.sub.5, --OCH.sub.2 CH.sub.2 SCH.sub.3 or --OCH.sub.2 CH.sub.2 SC.sub.2 H.sub.5)-4-(alkylthio or alkylsulfonyl)-acetophenones.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: October 6, 1992
    Assignee: Imperical Chemical Industries PLC
    Inventor: Richard W. Brown
  • Heterocyclic thione
    Patent number: 5074911
    Abstract: A process for extracting metal values such as gallium and/or indium from aqueous solutions by contacting said solutions with a water immiscible organic solvent having dissolved therein a heterocyclic thione.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: December 24, 1991
    Assignees: Imperical Chemical Industries PLC, Nerco Inc.
    Inventors: Peter W. Austin, Peter M. Quan, Peter A. Tasker, Derek Thorp
  • Novel chemical compounds and their use as low foam surfactants and antifoaming agents
    Patent number: 5059342
    Abstract: Novel chemical compounds which have formula CH.sub.3 CH.sub.2 CH.sub.2 )(A)R in which (A) is a polyalkylene oxide chain comprising 5 to 18 alkylene oxide residues in which there are 0 to 10 propylene oxide residues for every 10 ethylene oxide residues and R is a C.sub.8 to C.sub.18 alkyl group are suitable for use as low foam surfactants or antifoaming agents in cleaning processes and rinsing applications.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: October 22, 1991
    Assignee: Imperical Chemical Industries PLC
    Inventor: Trevor G. Blease
  • Coating compositions
    Patent number: 4916176
    Abstract: An aqueous coating composition comprising a film-forming material, a metallic pigment, phosphate inhibitor being either an orthophosphoric acid or an organic acid ester of phosphoric acid containing a group of formula (I): ##STR1## a cationic salt of one or more of the following metals: sodium, potassium, magnesium, calcium, strontium, barium, vanadium, cobalt, nickel, copper, zinc or silver; and a water containing diluent.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: April 10, 1990
    Assignee: Imperical Chemical Industries PLC
    Inventors: Zafirios Vachlas, Stephen J. Thorne